Automatic-shut-off water-glass.



C. F. MOORE. AUTOMATIC SHUT-OPF WATER GLASS. APPLIGATION FILED JULY 9.1909;

952,833 4 Patented Mar. 22, 1,910.

j gl/ 511mm I UIT Sra@ FT OFFIQFZ.

CLEMENT FRANCIS MOORE, OF CHICAGO, ILLINOIS.

AUTOMATIC-SHUT-OFF LATER-GLASS.

Application tiled July 9, 1909.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, CLEMENT FRANCIS MOORE, a citizen of the UnitedStates, residing at Chicago, in the county of Cook `and the State ofIllinois, with a post-office address at stl Ogden avenue, have inventeda new and useful Improvementin Automatic- Shut-Off Tater-Glasses forBoilers, of which the following is a specification.

My invention relates to glasses that indicate the height ot' water orother Afluid in boilers or other vessels.

The object of iny invention is to produce a device that is practicableand cheap that will automatically shut oft the water or fluid when theglass becomes broken.

Reference will be had to the accompanying drawings wherein- Figure l isa front vie-w of a boiler head showing the ordinary position of suchglasses. Fig. 2 is a vertical sectional view of theentire device. 3 is across section on a line S-S'of Fig. Q. Fig. Ll is a sectional viewthrough the glass at any midway position as on line 4 4, Fig. 2. Fig. 5is a section on line 5 5 of Fig. 2. Fig. 6 is an end view of piece 3.Fig. 7 is a view of one of the balls used in the device.

In the drawing l indicates the ordinary glass tube or water glass of aboiler.

2 indicates the ordinary water glass tixtures provided with hand valvesfor shutting the connections to the boiler.

3 indicates the connections of my device that connect to the ordinaryconnections 2.

a indicates valve seatpieces that connect. to 8, and 5 indicates theconnections that join the glass l at each end of the device.

The parts 3, 4 and 5 are connected by suitable threaded nipples as shownwith shoulders t'or suitable gaskets l5. In the valve seat pieces et,there are valves 01' any suitable construction but I prefer to useordinary disk valves 6 having stems 7, the valve disks seating upon theseats 8, when the glass is broken but when the glass is in order thevalve disks G are held up against the ends 9 ot' pieces 3 by springs l0,extending through the entire glass and abutting against the valve disks,thus the valves G are normally held open at all times when the device isin order with the glass intact. The springs l0 are made in short piecesas is shown and they slide freely within the glass and are abuttedagainst each other in such a way that they require the guidance orsupport of the glass to keen them in line in order to hold the valvedisks apart or up oft from their seats, but should this support by theglass cease for any short distance by the breaking` of the glass thesprings will spring out of line or slip out of engagement with eachother and then permit the valve disks to be carried by gravity or by theescaping water or steam or other fluid to their seats and thereby closeautomatically the passageways from the boiler.

The arrangement of the springs to bring about their dislocation at thetime of the breaking of the glass is provided for in any suitable mannerbut I prefer to use two methods, one of them being to construct thesprings with beveled ends as shown at ll and the other is to place ballsl2 in between the ends of the springs. In case of the use of the ballsthe balls are so constructed that they permit water or steam to pass,and for illustration they are shown as provided with grooves 13, as anexample ot means to this end.

The ends 9 are provided with apertures la extending outside theperipheries of the valves so that when the' lat-ter are held againstthese ends, the passageways are not closed.

Heretofore in the use of water glasses without an automatic safetyshut-off, the breaking of a glass often caused serious loss for it isdangerous and sometimes almost impossible to shut the hand valves owingto the escaping steam and hot water under pressure, and to do thissometimes requires the blowing ott of the boiler and the shutting downof the plant. But with my device no serious damage or delay results asit automatically closes the escape from the boiler and the new glass maybe put in by simply .shutting the hand valves and having access to theparts regardless of the pressure on the boiler.

What I claim is:

1. In apparatus of the class described, the combination with a waterglass, of valves at its ends, respectively, springs alined in the tubeand normally holding said valves open, and means whereby the elasticforce of the springs presses them out of alinement, allowing the valvesto shut, when the glass is broken.

2. In apparatus of the class described, the combination with a waterglass, of two valves at the ends of the glass, respectively,

a series of longitudinally compressed, alined springs within the glassand normally holding the valves open, and means for causing two abuttingends of said springs to disengage upon the breaking of the glass.

3. In apparatus of the class described the combination with a waterglass, of valves at the ends of the glass, respectively, and a series oflongitudinally compressed springs in the glass, normally supported inline thereby and holding the valves open, two meeting ends of saidsprings being inclined whereby they tend to push each other aside andpass out of engagement when the glass is broken.

4C. In apparatus ol the class described, the combination with a waterglass tube, of valves at the ends, respectively, of the tube and adaptedto close the passages thereto, springs extending through and normallyheld in line by the glass and normally holding the valves open, and aball between two adjacent ends of two spring sections, whereby thesprings are easily thrown out of alinement by their own elastic forcewhen the glass is broken.

5. In apparatus of the class described, the combination with a waterglass, of valves at the ends, respectively, of said glass a series ofdistinct abutting springs extending through the glass and normallyholding the 1 valves open, and a ball interposed between

